package main

import "fmt"

type calculation func(int, int) int

func add1(x, y int) int {
	return x + y
}
func sub1(x, y int) int {
	return x - y
}
func main() {
	var c calculation = func(x int, y int) int {
		return x + y
	}

	fmt.Println(c(1, 2))

}
